Signature Digital X-Ray Sensor Plastic Positioner Assorted Kit - 3 Piece Set. Includes set of 3: green- for right maxillary upper premolar/molar and left mandibular blue- for left maxillary premolar and right mandibular premolar/molar yellow- for maxillary/mandibular incisor- anterior teeth. The clamp size can be adjusted for different imaging plates. Applied for traditional or smaller dental films and wireless imaging plates (digital sensor).